Method for producing alkyl-bridged ligand systems and transition metal compounds

ABSTRACT

Highly substituted alkyl-bridged ligand systems based of indene derivatives and transition metal compounds can be obtained in high yields by a novel process.

The present invention relates to a process for preparing alkyl-bridged ligand systems and transition metal compounds.

The preparation of metallocenes is known per se (U.S. Pat. No. 4,752,597; U.S. Pat. No. 5,017,714; EP-A-320762; EP-A-416815; EP-A-537686; EP-A-669340; H. H. Brintzinger et al.; Angew. Chem., 107 (1995), 1255; H. H. Brintzinger et al., J. Organomet. Chem. 232 (1982), 233). For this purpose, it is possible, for example, to react indenyl-metal compounds with halides of transition metals such as titanium, zirconium and hafnium.

Metallocenes can, possibly in combination with one or more cocatalysts, be used as catalyst components for the polymerization and copolymerization of olefins. In particular, halogen-containing metallocenes are used as catalyst precursors which can be converted into a polymerization-active cationic metallocene complex by means of, for example, an aluminoxane (EP-A-129368).

The polymerization properties of a metallocene compound can be controlled by means of the ligand system. Derivatives of zirconocene dichloride in which the two substituted indenyl groups are joined to one another via a bridge can, owing to their conformational rigidity, be used as catalysts for the stereospecific polymerization of olefins. Variation of this bridge enables the properties of the catalyst and the resulting polymer to be controlled in a targeted manner (Chemical Reviews 2000, Volume 100, Issue 4). Apart from dialkylsilanediyl-bridged metallocenes, ethylidene-bridged metallocenes are also known (DE 19713549).

Although a number of synthetic routes have been described for preparing simple carbon-bridged ligand systems bearing a few substituents, these cannot be applied to the preparation of highly substituted bisindenyl ligands.

A further difficulty in the synthesis of carbon-bridged, highly substituted metallocenes is the metallation of the ligand. The synthesis of these complexes is thus complicated and gives poor yields, which leads directly to increased costs and to limited commercial utility.

Chem. Ber. 1994, 127, 2417-2419, describes the synthesis of 1,2-bis(fluorenyl)-1-phenylethanezirconium dichloride. This unsubstituted alkyl-bridged metal complex is obtained in a yield of 13%.

Organometallics 1992, 11, 1869-1876, describes the synthesis of 2,3-butylene-1,1′-bis(indenyl)zirconium dichloride. This metal complex unsubstituted on the indenyl ligand is obtained in a yield of 18%.

It is an object of the present invention to find a new synthetic route to this class of compounds which avoids the disadvantages of the prior art described and gives the desired compounds in better yields.

We have found that this object is achieved by preparing the ligand systems from highly substituted indene derivatives and alternative bridging reagents, which gives good yields. The use of an alternative metal source leads to the target compounds in high yields and purities. The synthetic route described here gives a high total yield and high purities.

The present invention accordingly provides a process for preparing compounds of the formula I:

where

M¹ is Ti, Zr or Hf, particularly preferably zirconium,

R¹ are identical or different and are each hydrogen or a C₁-C₂₀ group, preferably C₁-C₁₈-alkyl, such as methyl, ethyl, n-propyl, n-butyl, n-pentyl, n-hexyl, n-heptyl, n-octyl, n-nonyl, n-decyl, cyclopentyl or cyclohexyl, isopropyl, isobutyl, isopentyl, isohexyl, tert-butyl, C₂-C₁₀-alkenyl, C₃-C₁₅-alkylalkenyl, C₆-C₁₈-aryl, C₄-C₁₈-heteroaryl, C₇-C₂₀-arylalkyl, C₇-C₂₀-alkylaryl, fluorinated C₁-C₁₂-alkyl, fluorinated C₆-C₁₈-aryl, fluorinated C₇-C₂₀-arylalkyl or fluorinated C₇-C₂₀-alkylaryl, and

R² are identical or different and are each hydrogen or a C₁-C₂₀ group, preferably C₁-C₁₈-alkyl such as methyl, ethyl, n-propyl, n-butyl, n-pentyl, n-hexyl, n-heptyl, n-octyl, n-nonyl, n-decyl, cyclopentyl or cyclohexyl, isopropyl, isobutyl, isopentyl, isohexyl, tert-butyl, C₂-C₁₀-alkenyl, C₃-C₁₅-alkylalkenyl, C₆-C₁₈-aryl, C₄-C₁₈-heteroaryl, C₇-C₂₀-arylalkyl, C₇-C₂₀-alkylaryl, fluorinated C₁-C₁₂-alkyl, fluorinated C₆-C₁₈-aryl, fluorinated C₇-C₂₀-arylalkyl or fluorinated C₇-C₂₀-alkylaryl, where R¹ together with R² may also form a monocyclic or polycyclic ring system, and

R³ are identical or different and are each a hydrogen atom or a C₆-C₁₈-aryl group which may be substituted, in particular phenyl, 4-methylphenyl, 4-ethylphenyl, 4-propylphenyl, 4-isopropylphenyl, 4-tert-butylphenyl, 4-methoxyphenyl, 1-naphthyl, 9-anthracenyl, 3,5-di-tert-butylphenyl, 4-trifluoromethylphenyl, C₅-C₁₈-heteroaryl, C₇-C₂₀-arylalkyl, C₇-C₂₀-alkylaryl, fluorinated C₆-C₁₈-aryl, fluorinated C₇-C₂₀-arylalkyl or fluorinated C₇-C₂₀-alkylaryl and two radicals R³ and R⁴ may form a monocyclic or polycyclic ring system, particularly preferably 4,5-benzindenyl,

R⁴ are identical or different and are each either a hydrogen atom or together with R³ form a monocyclic or polycyclic ring system,

R⁵, R⁶ are identical or different and are each a hydrogen atom or a C₁-C₂₀ group, preferably C₂-C₁₀-alkenyl, C₃-C₁₅-alkylalkenyl, C₆-C₁₈-aryl, C₄-C₁₈-heteroaryl, C₇-C₂₀-arylalkyl, C₇-C₂₀-alkylaryl, fluorinated C₁-C₁₂-alkyl, fluorinated C₆-C₁₈-aryl, fluorinated C₇-C₂₀-arylalkyl or fluorinated C₇-C₂₀-alkylaryl,

R⁷, R⁸, R⁹, R¹⁰ are identical or different and are each a hydrogen atom or a C₁-C₂₀ group, e.g. methyl, ethyl, n-propyl, n-butyl, n-pentyl, n-hexyl, n-heptyl, n-octyl, n-nonyl, n-decyl, cyclopentyl or cyclohexyl, isopropyl, isobutyl, isopentyl, isohexyl, tert-butyl, C₂-C₁₀-alkenyl, C₃-C₁₅-alkylalkenyl, C₆-C₁₈-aryl, C₄-C₁₈-heteroaryl, C₇-C₂₀-arylalkyl, C₇-C₂₀-alkylaryl, fluorinated C₁-C₁₂-alkyl, fluorinated C₆-C₁₈-aryl, fluorinated C₇-C₂₀-arylalkyl or fluorinated C₇-C₂₀-alkylaryl, and may among one another form a monocyclic or bicyclic ring system, e.g. cis- or trans-cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, cyclononyl, cyclodecyl,

i is from 1 to 10, preferably from 1 to 8, very particularly preferably from 1 to 3, and

j is from 1 to 10, preferably from 1 to 8, very particularly preferably from 1 to 3, and

X¹, X² may be identical or different and are each a halogen atom, in particular chlorine, an alkyl group, in particular methyl, or a substituted or unsubstituted phenoxide. X¹ together with one or more radicals X¹ or X² may also form a monocyclic or polycyclic ring system.

Despite being indexed the same, the two indenyl radicals can be substituted differently, e.g. R³ may be phenyl in the first indenyl radical and may be naphthyl in the second indenyl radical.

For this purpose, a compound of the formula II

where

R¹, R², R³, R⁴, R⁵ and R⁶ are as defined above and

R¹¹ is a hydrogen atom and

R¹² is a hydrogen atom or a group which can be replaced by a metal, preferably chlorine, bromine or iodine,

is firstly reacted with a compound of the formula III

M²R¹³ _(n)X³ _(m)  (III)

where

M² is an element of main group I or II of the Periodic Table of the Elements, preferably lithium, sodium, potassium or magnesium, particularly preferably lithium, and

R¹³ is a hydrogen atom or a C₁-C₂₀ group, preferably C₁-C₁₈-alkyl such as methyl, ethyl, n-butyl, n-hexyl, sec-butyl, tert-butyl, cyclohexyl or cyclooctyl, C₂-C₁₀-alkenyl, C₃-C₁₅-alkylalkenyl, C₆-C₁₈-aryl, such as phenyl, tolyl, xylyl, C₅-C₁₈-heteroaryl, C₇-C₂₀-arylalkyl, C₇-C₂₀-alkylaryl, fluorinated C₁-C₁₂-alkyl, fluorinated C₆-C₁₈-aryl, fluorinated C₇-C₂₀-arylalkyl or fluorinated C₇-C₂₀-alkylaryl, preferably C₁-C₁₈-alkyl such as methyl, ethyl, n-butyl, n-hexyl, tert-butyl, C₆-C₁₈-aryl such as phenyl, tolyl, xylyl, particularly preferably methyl, ethyl, n-butyl, n-hexyl, tert-butyl, phenyl or tolyl, and

X³ is a halogen atom, preferably chlorine, bromine or iodine, and

n is 1 or 2 and

m is 0 or 1,

in a solvent. The compounds of the formula III can be used in solution, as a pure substance or as a suspension or can be generated in situ from a metal M² such as lithium and an alkyl or aryl halide. Nonlimiting examples of preferred compounds of the formula III are:

methyllithium, ethyllithium, n-propyllithium, i-propyllithium,

n-butyllithium, s-butyllithium, t-butyllithium, n-pentyllithium,

s-pentyllithium, t-pentyllithium, n-hexyllithium, s-hexyllithium,

t-hexyllithium, heptyllithium, octyllithium, nonyllithium,

decyllithium, phenyllithium, o-tolyllithium, m-tolyllithium,

p-tolyllithium, xylyllithium, methylsodium, ethylsodium,

n-propylsodium, i-propylsodium, n-butylsodium, s-butylsodium,

t-butylsodium, n-pentylsodium, s-pentylsodium, t-pentylsodium,

n-hexylsodium, s-hexylsodium, t-hexylsodium, heptylsodium,

octylsodium, nonylsodium, decylsodium, phenylsodium,

o-tolylsodium, m-tolylsodium, p-tolylsodium, xylylsodium,

methylpotassium, ethylpotassium, n-propylpotassium,

i-propylpotassium, n-butylpotassium, s-butylpotassium,

t-butylpotassium, n-pentylpotassium, s-pentylpotassium,

t-pentylpotassium, n-hexylpotassium, s-hexylpotassium,

t-hexylpotassium, heptylpotassium, octylpotassium,

nonylpotassium, decylpotassium, phenylpotassium,

o-tolylpotassium, m-tolylpotassium, p-tolylpotassium,

xylylpotassium, methylmagnesium bromide, ethylmagnesium bromide,

n-propylmagnesium bromide, i-propylmagnesium bromide,

n-butylmagnesium bromide, s-butylmagnesium bromide,

t-butylmagnesium bromide, n-pentylmagnesium bromide,

s-pentylmagnesium bromide, t-pentylmagnesium bromide,

n-hexylmagnesium bromide, s-hexylmagnesium bromide,

t-hexylmagnesium bromide, heptylmagnesium bromide, octylmagnesium

bromide, nonylmagnesium bromide, decylmagnesium bromide,

phenylmagnesium bromide, o-tolylmagnesium bromide,

m-tolylmagnesium bromide, p-tolylmagnesium bromide,

xylylmagnesium bromide, dimethylmagnesium, diethylmagnesium,

di-n-propylmagnesium, di-i-propylmagnesium, di-n-butylmagnesium,

s-dibutylmagnesium, di-t-butylmagnesium, di-n-pentylmagnesium,

s-dipentylmagnesium, di-t-pentylmagnesium, di-n-hexylmagnesium,

s-dihexylmagnesium, di-t-hexylmagnesium, diheptylmagnesium,

dioctylmagnesium, dinonylmagnesium, didecylmagnesium,

diphenylmagnesium, o-ditolylmagnesium, m-ditolylmagnesium,

p-ditolylmagnesium, butyloctylmagnesium and dixylylmagnesium.

One or more compounds of the formula II can first be placed in a reaction vessel. The compounds can either be dissolved or suspended in a solvent or be present as such. Suitable solvents are both polar aprotic solvents (cycloalkyl ethers, dialkyl ethers, alkyl aryl ethers, diaryl ethers) e.g. dimethyl ether, diethyl ether, dipropyl ether, diisopropyl ether, di-n-butyl ether, di-s-butyl ether, di-t-butyl ether, t-butyl methyl ether, dimethoxyethane, diethoxyethane, tetrahydrofuran, tetrahydropyran, anisole, diphenyl ether etc., and also nonpolar aprotic solvents (aliphatic or aromatic hydrocarbons), e.g. n-pentane, isopentane, n-hexane, n-heptane, cyclohexane, isododecane, n-octane, n-nonane, n-decane, petroleum ether, toluene, benzene, o-xylene, m-xylene, p-xylene, 1,2,3-trimethylbenzene, 1,2,4-trimethylbenzene, 1,2,5-trimethylbenzene, 1,3,5-trimethylbenzene, ethylbenzene, propylbenzene, etc., and mixtures of these. The compounds are initially charged at from −100° C. to 300° C., preferably from −78° C. to 100° C., particularly preferably at from −40° C. to 40° C. The compound of the formula II is preferably present in dissolved form or as a suspension. One or more compounds of the formula III can subsequently be added. These can likewise be dissolved or suspended in a solvent or can be used as such. Suitable solvents are those described above or mixtures thereof.

The addition can be carried out over a period of from 1 minute to up to 96 hours. Addition over a period of from 10 minutes to 8 hours is preferred. The temperature of the initial charge during the addition is from −100° C. to 200° C., preferably from −80° C. to 150° C., particularly preferably from −40° C. to 40° C. The temperature is selected so that at least one reactant is present in a liquid phase. The subsequent reaction temperature is preferably from −40° C. to 100° C. Furthermore, the reaction can be carried out at atmospheric pressure but can also be carried out at superatmospheric pressure, although this requires appropriate reactors. The stoichiometric ratio in which the compounds of the formulae II and III are combined is from 1:1000 to 1:0.011. Preference is given to a stoichiometric ratio of the compounds of the formulae II and III of from 1:100 to 1:11. Particular preference is given to a stoichiometric reaction based on the compounds of the formulae II and III. The reaction can be carried out either in the order described here or in the reverse order, i.e. by addition of compounds of the formula II in dissolved form, in suspension or as such to compounds of the formula III in dissolved form, in suspension or as such. In the latter case, the reaction conditions are analogous to those described here.

The reaction of a compound of the formula II with the compound of the formula III gives a compound of the formula IV

where

R¹, R², R³, R⁴, R⁵, R⁶, R¹¹ are as defined above and

M² and X³ are as defined above and

n is 1 or 2 and

m is 0 or 1.

Compounds of the formula IV can either be isolated or be reacted directly, in the same solvent or a different solvent, with a compound of the formula V

where

R⁷, R⁸, R⁹ and R¹⁰ are as defined above and

R¹⁴, R¹⁵ are identical or different and are each a C₁-C₂₀ group, e.g. C₁-C₁₈-alkyl such as methyl, ethyl, n-butyl, n-hexyl, sec-butyl, tert-butyl, cyclohexyl or cyclooctyl, C₂-C₁₀-alkenyl, C₃-C₁₅-alkylalkenyl, C₆-C₁₈-aryl such as phenyl, tolyl, xylyl, C₅-C₁₈-heteroaryl, C₇-C₂₀-arylalkyl, C₇-C₂₀-alkylaryl, fluorinated C₁-C₁₂-alkyl, fluorinated C₆-C₁₈-aryl, fluorinated C₇-C₂₀-arylalkyl or fluorinated C₇-C₂₀-alkylaryl, preferably methyl, ethyl, propyl, i-propyl, n-butyl, s-butyl, t-butyl, pentyl etc., phenyl, tolyl, xylyl, trifluoromethyl, pentafluoroethyl, heptafluoropropyl, heptafluoroisopropyl etc., particularly preferably methyl, trifluoromethyl, p-tolyl, very particularly preferably trifluoromethyl, where R¹⁴ and R¹⁵ may also among one another form a nonhalogenated, partially halogenated or perhalogenated cyclic ring system and

i is from 1 to 10, preferably from 1 to 8, very particularly preferably from 1 to 3, and

j is from 1 to 10, preferably from 1 to 8, very particularly preferably from 1 to 3.

One or more compounds of the formula IV can firstly be placed in a reaction vessel.

The compounds can either be dissolved or suspended in a solvent or be present as such. Suitable solvents are both polar aprotic solvents (cycloalkyl ethers, dialkyl ethers, alkyl aryl ethers, diaryl ethers) e.g. dimethylformamide, dimethylacetamide, dimethyl sulfoxide, dimethyl ether, diethyl ether, dipropyl ether, diisopropyl ether, di-n-butyl ether, di-s-butyl ether, di-t-butyl ether, t-butyl methyl ether, dimethoxyethane, diethoxyethane, tetrahydrofuran, tetrahydropyran, anisole, diphenyl ether etc., and also nonpolar aprotic solvents (aliphatic or aromatic hydrocarbons), e.g. n-pentane, isopentane, n-hexane, n-heptane, cyclohexane, isododecane, n-octane, n-nonane, n-decane, petroleum ether, toluene, benzene, o-xylene, m-xylene, p-xylene, 1,2,3-trimethylbenzene, 1,2,4-trimethylbenzene, 1,2,5-trimethylbenzene, 1,3,5-trimethylbenzene, ethylbenzene, propylbenzene, etc., and mixtures of these. The compounds are initially charged at from −100° C. to 300° C., preferably from −78° C. to 100° C., particularly preferably at from −40° C. to 40° C. The compound of the formula IV is preferably present in dissolved form or as a suspension. One or more compounds of the formula V can subsequently be added. These can likewise be dissolved or suspended in a solvent or can be used as such. Suitable solvents are those described above or mixtures thereof.

The addition can be carried out over a period of from 1 minute to up to 96 hours. Addition over a period of from 10 minutes to 8 hours is preferred. The temperature of the initial charge during the addition is from −100° C. to 200° C., preferably from −80° C. to 150° C., particularly preferably from −40° C. to 40° C. The temperature is selected so that at least one reactant is present in a liquid phase. The subsequent reaction temperature is preferably from −40° C. to 100° C. Furthermore, the reaction can be carried out at atmospheric pressure but can also be carried out at superatmospheric pressure, although this requires appropriate reactors. The stoichiometric ratio in which the compounds of the formulae IV and V are combined is from 1:10 to 1:0.05. Preference is given to a stoichiometric ratio of the compounds of the formulae IV and V of from 1:2 to 1:0.25. Particular preference is given to a stoichiometric reaction based on the compounds of the formulae IV and V. The reaction can be carried out either in the order described here or in the reverse order, i.e. by addition of compounds of the formula IV in dissolved form, in suspension or as such to compounds of the formula V in dissolved form, in suspension or as such. In the latter case, the reaction conditions are analogous to those described here. The reaction mixture is worked up by hydrolysis and removal of water-soluble by-products. The product VI can either be purified by chromatography or recrystallization or can be reacted without further purification.

The reaction of a compound of the formula IV with a compound of the formula V gives a ligand system of the formula VI

where

R¹, R², R³, R⁴, R⁵, R⁶, R⁷, R⁸, R⁹, R¹⁰ are as defined above and

i and j are as defined above.

The compounds of the formula VI can be mixtures of various double bond isomers.

The transition metal complexes of the formula VII are synthesized by reacting a compound of the formula VI with a compound of the formula III. The compounds of the formula III can be used in solution, as such or as a suspension or can be generated in situ from a metal M², e.g. lithium, and an alkyl or aryl halide.

One or more compounds of the formula VI can first be placed in a reaction vessel. The compounds can either be dissolved or suspended in a solvent or be present as such. Suitable solvents are both polar aprotic solvents (cycloalkyl ethers, dialkyl ethers, alkyl aryl ethers, diaryl ethers) e.g. dimethyl ether, diethyl ether, dipropyl ether, diisopropyl ether, di-n-butyl ether, di-s-butyl ether, di-t-butyl ether, t-butyl methyl ether, dimethoxyethane, diethoxyethane, tetrahydrofuran, tetrahydropyran, anisole, diphenyl ether etc., and also nonpolar aprotic solvents (aliphatic or aromatic hydrocarbons), e.g. n-pentane, isopentane, n-hexane, n-heptane, cyclohexane, isododecane, n-octane, n-nonane, n-decane, petroleum ether, toluene, benzene, o-xylene, m-xylene, p-xylene, 1,2,3-trimethylbenzene, 1,2,4-trimethylbenzene, 1,2,5-trimethylbenzene, 1,3,5-trimethylbenzene, ethylbenzene, propylbenzene, etc., and mixtures of these. The compounds are initially charged at from −100° C. to 300° C., preferably from −78° C. to 100° C., particularly preferably at from −40° C. to 40° C. The compound of the formula II is preferably present in dissolved form or as a suspension. One or more compounds of the formula III can subsequently be added. These can likewise be dissolved or suspended in a solvent or can be used as such. Suitable solvents are those described above or mixtures thereof.

The addition can be carried out over a period of from 1 minute to up to 96 hours. Addition over a period of from 10 minutes to 8 hours is preferred. The temperature of the initial charge during the addition is from −100° C. to 200° C., preferably from −80° C. to 150° C., particularly preferably from −40° C. to 40° C. The temperature is selected so that at least one reactant is present in a liquid phase. The subsequent reaction temperature is preferably from −40° C. to 100° C. Furthermore, the reaction can be carried out at atmospheric pressure but can also be carried out at superatmospheric pressure, although this requires appropriate reactors. The stoichiometric ratio in which the compounds of the formulae VI and III are combined is from 1:10 to 1:1. Preference is given to a stoichiometric ratio of the compounds of the formulae VI and III of from 1:3 to 1:1.8. Particular preference is given to a stoichiometric ratio of the compounds of the formulae VI to the compounds of the formula III of from 1:2.2 to 1:2. The reaction can be carried out either in the order described here or in the reverse order, i.e. by addition of compounds of the formula VI in dissolved form, in suspension or as such to compounds of the formula III in dissolved form, in suspension or as such. In the latter case, the reaction conditions are analogous to those described here.

The reaction of a compound of the formula VI with a compound of the formula III gives a metallated ligand system of the formula VII

where

R¹, R², R³, R⁴, R⁵, R⁶, R⁷, R⁸, R⁹, R¹⁰ and R¹¹ are as defined above and

M² and X³ are as defined above and

n is 1 or 2 and

o is 0, 1 or 2 and

i and j are as defined above.

The compound of the formula VII can be isolated by a method analogous to that of DE 19739946 or prepared in situ and reacted with a compound of the formula VIII

M¹(X¹)_(f)(X²)_(g)(D)_(a)  (VIII)

where

M¹ is titanium, zirconium or hafnium, very particularly preferably zirconium, and

is a donor solvent containing at least one oxygen or sulfur atom, preferably 1 or 2 oxygen or sulfur atoms, very particularly preferably 1 or 2 oxygen atoms, and

X¹ and X² are identical or different and are as defined above, preferably halogen atoms or phenoxides, particularly preferably chlorine, bromine or iodine, very particularly preferably chlorine, and

f is from 0 to 4, preferably from 1 to 4, and

g is from 0 to 4, preferably from 1 to 4, and the sum f+g corresponds to the oxidation state of the metal ion,

a is from 1 to 100, preferably from 1 to 10, particularly preferably 1 or 2.

D is preferably an ether, cyclic ether or acetal, e.g. tetrahydrofuran, tetrahydropyran, diethyl ether, dimethoxymethane, diethoxymethane, dipropoxymethane, 1,2-dimethoxyethane, 1,2-diethoxyethane, 1,2-dipropoxyethane, 1,3-dimethoxypropane; 1,3-diethoxypropane, 1,3-dipropoxypropane, 1,2-dimethoxybenzene, 1,2-diethoxybenzene and/or 1,2-dipropoxybenzene.

R¹, R² are preferably identical and are each a C₁-C₂₀ group, preferably C₁-C₁₈-alkyl such as methyl, ethyl, n-propyl, n-butyl, n-pentyl, n-hexyl, n-heptyl, n-octyl, n-nonyl, n-decyl, cyclopentyl or cyclohexyl, isopropyl, isobutyl, isopentyl, isohexyl, tert-butyl, C₂-C₁₀-alkenyl, C₃-C₁₅-alkylalkenyl, C₆-C₁₈-aryl, C₄-C₁₈-heteroaryl, C₇-C₂₀-arylalkyl, C₇-C₂₀-alkylaryl, fluorinated C₁-C₁₂-alkyl, fluorinated C₆-C₁₈-aryl, fluorinated C₇-C₂₀-arylalkyl or fluorinated C₇-C₂₀-alkylaryl, where R¹ together with R² may also form a monocyclic or polycyclic ring system.

Illustrative but nonlimiting examples of compounds of the formula VIII which can be prepared by the process of the present invention are:

ZrCl₄(tetrahydrofuran)₂; ZrCl₄(tetrahydropyran)2; ZrCl₄(diethyl ether)₂; ZrCl₄(dimethoxymethane); ZrCl₄(diethoxymethane);

ZrCl₄(dipropoxymethane); ZrCl₄(1,2-dimethoxyethane);

ZrCl₄(1,2-diethoxyethane); ZrCl₄(1,2-dipropoxyethane);

ZrCl₄(1,3-dimethoxypropane); ZrCl₄(1,3-diethoxypropane);

ZrCl₄(1,3-dipropoxypropane); ZrCl₄(1,2-dimethoxybenzene);

ZrCl₄(1,2-diethoxybenzene); ZrCl₄(1,2-dipropoxybenzene);

TiCl₄(tetrahydrofuran)₂; TiCl₄(tetrahydropyran)₂; TiCl₄(diethyl ether)₂; TiCl₄(dimethoxymethane); TiCl₄(diethoxymethane);

TiCl₄(dipropoxymethane); TiCl₄(1,2-dimethoxyethane);

TiCl₄(1,2-diethoxyethane); TiCl₄(1,2-dipropoxyethane);

TiCl₄(1,3-dimethoxypropane); TiCl₄(1,3-diethoxypropane);

TiCl₄(1,3-dipropoxypropane); TiCl₄(1,2-dimethoxybenzene);

TiCl₄(1,2-diethoxybenzene); TiCl₄(1,2-dipropoxybenzene);

HfCl₄(tetrahydrofuran)₂; HfCl₄(tetrahydropyran)₂; HfCl₄(diethyl ether)₂; HfCl₄(dimethoxymethane); HfCl₄(diethoxymethane);

HfCl₄(dipropoxymethane); HfCl₄(1,2-dimethoxyethane);

HfCl₄(1,2-diethoxyethane); HfCl₄(1,2-dipropoxyethane);

HfCl₄(1,3-dimethoxypropane); HfCl₄(1,3-diethoxypropane);

HfCl₄(1,3-dipropoxypropane); HfCl₄(1,2-dimethoxybenzene);

HfCl₄(1,2-diethoxybenzene); HfCl₄(1,2-dipropoxybenzene).

To synthesize the transition metal complexes of the formula I, a compound of the formula VII is reacted with a compound of the formula VIII. The compounds of the formula VIII can be used in solution, as such or as a suspension or can be generated in situ from a metal halide of the formula M¹X_(f)X_(g), e.g. zirconium tetrachloride, and a donor solvent D_(a).

One or more compounds of the formula VII can first be placed in a reaction vessel. The compounds can either be dissolved or suspended in a solvent or be present as such. Suitable solvents are both polar aprotic solvents (cycloalkyl ethers, dialkyl ethers, alkyl aryl ethers, diaryl ethers) e.g. dimethyl ether, diethyl ether, dipropyl ether, diisopropyl ether, di-n-butyl ether, di-s-butyl ether, di-t-butyl ether, t-butyl methyl ether, dimethoxyethane, diethoxyethane, tetrahydrofuran, tetrahydropyran, anisole, diphenyl ether etc., and also nonpolar aprotic solvents (aliphatic or aromatic hydrocarbons), e.g. n-pentane, isopentane, n-hexane, n-heptane, cyclohexane, isododecane, n-octane, n-nonane, n-decane, petroleum ether, toluene, benzene, o-xylene, m-xylene, p-xylene, 1,2,3-trimethylbenzene, 1,2,4-trimethylbenzene, 1,2,5-trimethylbenzene, 1,3,5-trimethylbenzene, ethylbenzene, propylbenzene, etc., and mixtures of these. The compounds are initially charged at from −100° C. to 300° C., preferably from −78° C. to 100° C., particularly preferably at from −40° C. to 40° C. The compound of the formula VII is preferably present in dissolved form or as a suspension. One or more compounds of the formula VIII can subsequently be added. These can likewise be dissolved or suspended in a solvent or can be used as such. Suitable solvents are those described above or mixtures thereof.

The addition can be carried out over a period of from 1 minute to up to 96 hours. Addition over a period of from 10 minutes to 8 hours is preferred. The temperature of the initial charge during the addition is from −100° C. to 200° C., preferably from −80° C. to 150° C., particularly preferably from −40° C. to 40° C. The temperature is selected so that at least one reactant is present in a liquid phase. The subsequent reaction temperature is preferably from −40° C. to 100° C. Furthermore, the reaction can be carried out at atmospheric pressure but can also be carried out at superatmospheric pressure, although this requires appropriate reactors. The stoichiometric ratio in which the compounds of the formulae VII and VIII are combined is from 1:10 to 1:0.1. Preference is given to a stoichiometric ratio of the compounds of the formulae VII and VIII of from 1:5 to 1:0.5. Particular preference is given to a stoichiometric ratio of the compounds of the formula VII to the compounds of the formula VIII of 1:1. The reaction can be carried out either in the order described here or in the reverse order, i.e. by addition of compounds of the formula VII in dissolved form, in suspension or as such to compounds of the formula VIII in dissolved form, in suspension or as such. In the latter case, the reaction conditions are analogous to those described here.

The reaction of a compound of the formula VII with a compound of the formula VIII gives a transition metal compound of the formula I.

Preference is given to compounds of the formula I in which the respective radicals R¹ and also the respective radicals R³ are identical.

Illustrative but nonlimiting examples of metallocenes which can be prepared by the synthetic route described here are:

1,2-ethanediylbis(2-methylindenyl)zirconium dichloride

1,2-ethanediylbis(2-methyl-4,5-benzindenyl)zirconium dichloride

1,2-ethanediylbis(2-methyl-4-phenylindenyl)zirconium dichloride

1,2-ethanediylbis(2-methyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-methyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-methyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-methyl-4-(4′-isopropylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-methyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-methyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-methyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-methyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-methyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-methyl-4-(4′-trifluoromethylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(9′-fluorenyl)zirconium dichloride

1,2-ethanediylbis(2-ethylindenyl)zirconium dichloride

1,2-ethanediylbis(2-ethyl-4,5-benzindenyl)zirconium dichloride

1,2-ethanediylbis(2-ethyl-4-phenylindenyl)zirconium dichloride

1,2-ethanediylbis(2-ethyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-ethyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-ethyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-ethyl-4-(4′-isopropylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-ethyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-ethyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-ethyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-ethyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-ethyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-ethyl-4-(4′-trifluoromethylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-propylindenyl)zirconium dichloride

1,2-ethanediylbis(2-propyl-4,5-benzindenyl)zirconium dichloride

1,2-ethanediylbis(2-propyl-4-phenylindenyl)zirconium dichloride

1,2-ethanediylbis(2-propyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-propyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-propyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-propyl-4-(4′-isopropylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-propyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-propyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-propyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-propyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-propyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-propyl-4-(4′-trifluoromethylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-isopropylindenyl)zirconium dichloride

1,2-ethanediylbis(2-isopropyl-4,5-benzindenyl)zirconium dichloride

1,2-ethanediylbis(2-isopropyl-4-phenylindenyl)zirconium dichloride

1,2-ethanediylbis(2-isopropyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-isopropyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-isopropyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-isopropyl-4-(4′-isopropylphenyl)indenyl) zirconium dichloride

1,2-ethanediylbis(2-isopropyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-isopropyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-isopropyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-isopropyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-isopropyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-isopropyl-4-(4′-trifluoromethylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-isobutylindenyl)zirconium dichloride

1,2-ethanediylbis(2-isobutyl-4,5-benzindenyl)zirconium dichloride

1,2-ethanediylbis(2-isobutyl-4-phenylindenyl)zirconium dichloride

1,2-ethanediylbis(2-isobutyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-isobutyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-isobutyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-isobutyl-4-(4′-isopropylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-isobutyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-isobutyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-isobutyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-isobutyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-isobutyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-isobutyl-4-(4′-trifluoromethylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-butylindenyl)zirconium dichloride

1,2-ethanediylbis(2-butyl-4,5-benzindenyl)zirconium dichloride

1,2-ethanediylbis(2-butyl-4-phenylindenyl)zirconium dichloride

1,2-ethanediylbis(2-butyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-butyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-butyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-butyl-4-(4′-isopropylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-butyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-butyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-butyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-butyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-butyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-butyl-4-(4′-trifluoromethylphenyl)indenyl) zirconium dichloride

1,2-ethanediylbis(2-tert-butylindenyl)zirconium dichloride

1,2-ethanediylbis(2-tert-butyl-4,5-benzindenyl)zirconium dichloride

1,2-ethanediylbis(2-tert-butyl-4-phenylindenyl)zirconium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(4′-isopropylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(4′-trifluoromethylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-cyclopentylindenyl)zirconium dichloride

1,2-ethanediylbis(2-cyclopentyl-4,5-benzindenyl)zirconium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-phenylindenyl)zirconium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(4′-isopropylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(4′-trifluoromethylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-cyclohexylindenyl)zirconium dichloride

1,2-ethanediylbis(2-cyclohexyl-4,5-benzindenyl)zirconium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-phenylindenyl)zirconium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(4′-isopropylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(4′-trifluoromethylphenyl)indenyl)zirconium dichloride

1,2-ethanediylbis(2-methylindenyl)titanium dichloride

1,2-ethanediylbis(2-methyl-4,5-benzindenyl)titanium dichloride

1,2-ethanediylbis(2-methyl-4-phenylindenyl)titanium dichloride

1,2-ethanediylbis(2-methyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-methyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-methyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-methyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-methyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-methyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-methyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-methyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-methyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-methyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(9′-fluorenyl)titanium dichloride

1,2-ethanediylbis(2-ethylindenyl)titanium dichloride

1,2-ethanediylbis(2-ethyl-4,5-benzindenyl)titanium dichloride

1,2-ethanediylbis(2-ethyl-4-phenylindenyl)titanium dichloride

1,2-ethanediylbis(2-ethyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-ethyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-ethyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-ethyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-ethyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-ethyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-ethyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-ethyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-ethyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-ethyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-propylindenyl)titanium dichloride

1,2-ethanediylbis(2-propyl-4,5-benzindenyl)titanium dichloride

1,2-ethanediylbis(2-propyl-4-phenylindenyl)titanium dichloride

1,2-ethanediylbis(2-propyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-propyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-propyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-propyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-propyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-propyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-propyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-propyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-propyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-propyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-isopropylindenyl)titanium dichloride

1,2-ethanediylbis(2-isopropyl-4,5-benzindenyl)titanium dichloride

1,2-ethanediylbis(2-isopropyl-4-phenylindenyl)titanium dichloride

1,2-ethanediylbis(2-isopropyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-isopropyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-isopropyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-isopropyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-isopropyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-isopropyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-isopropyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-isopropyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-isopropyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-isopropyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-isobutylindenyl)titanium dichloride

1,2-ethanediylbis(2-isobutyl-4,5-benzindenyl)titanium dichloride

1,2-ethanediylbis(2-isobutyl-4-phenylindenyl)titanium dichloride

1,2-ethanediylbis(2-isobutyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-isobutyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-isobutyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-isobutyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-isobutyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-isobutyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-isobutyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-isobutyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-isobutyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-isobutyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-butylindenyl)titanium dichloride

1,2-ethanediylbis(2-butyl-4,5-benzindenyl)titanium dichloride

1,2-ethanediylbis(2-butyl-4-phenylindenyl)titanium dichloride

1,2-ethanediylbis(2-butyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-butyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-butyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-butyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-butyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-butyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-butyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-butyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-butyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-butyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-tert-butylindenyl)titanium dichloride

1,2-ethanediylbis(2-tert-butyl-4,5-benzindenyl)titanium dichloride

1,2-ethanediylbis(2-tert-butyl-4-phenylindenyl)titanium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-cyclopentylindenyl)titanium dichloride

1,2-ethanediylbis(2-cyclopentyl-4,5-benzindenyl)titanium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-phenylindenyl)titanium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-cyclohexylindenyl)titanium dichloride

1,2-ethanediylbis(2-cyclohexyl-4,5-benzindenyl)titanium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-phenylindenyl)titanium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,2-ethanediylbis(2-methylindenyl)hafnium dichloride

1,2-ethanediylbis(2-methyl-4,5-benzindenyl)hafnium dichloride

1,2-ethanediylbis(2-methyl-4-phenylindenyl)hafnium dichloride

1,2-ethanediylbis(2-methyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-methyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-methyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-methyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-methyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-methyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-methyl-4-(1′-naphthyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-methyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-methyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-methyl-4-(4′-trifluoromethylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(9′-fluorenyl)hafnium dichloride

1,2-ethanediylbis(2-ethylindenyl)hafnium dichloride

1,2-ethanediylbis(2-ethyl-4,5-benzindenyl)hafnium dichloride

1,2-ethanediylbis(2-ethyl-4-phenylindenyl)hafnium dichloride

1,2-ethanediylbis(2-ethyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-ethyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-ethyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-ethyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-ethyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-ethyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-ethyl-4-(1′-naphthyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-ethyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-ethyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-ethyl-4-(4′-trifluoromethylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-propylindenyl)hafnium dichloride

1,2-ethanediylbis(2-propyl-4,5-benzindenyl)hafnium dichloride

1,2-ethanediylbis(2-propyl-4-phenylindenyl)hafnium dichloride

1,2-ethanediylbis(2-propyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-propyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-propyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-propyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-propyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-propyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-propyl-4-(1′-naphthyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-propyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-propyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-propyl-4-(4′-trifluoromethylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-isopropylindenyl)hafnium dichloride

1,2-ethanediylbis(2-isopropyl-4,5-benzindenyl)hafnium dichloride

1,2-ethanediylbis(2-isopropyl-4-phenylindenyl)hafnium dichloride

1,2-ethanediylbis(2-isopropyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-isopropyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-isopropyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-isopropyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-isopropyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-isopropyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-isopropyl-4-(1′-naphthyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-isopropyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-isopropyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-isopropyl-4-(4′-trifluoromethylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-isobutylindenyl)hafnium dichloride

1,2-ethanediylbis(2-isobutyl-4,5-benzindenyl)hafnium dichloride

1,2-ethanediylbis(2-isobutyl-4-phenylindenyl)hafnium dichloride

1,2-ethanediylbis(2-isobutyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-isobutyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-isobutyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-isobutyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-isobutyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-isobutyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-isobutyl-4-(l′-naphthyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-isobutyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-isobutyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-isobutyl-4-(4′-trifluoromethylphenyl)indenyl) hafnium dichloride

1,2-ethanediylbis(2-butylindenyl)hafnium dichloride

1,2-ethanediylbis(2-butyl-4,5-benzindenyl)hafnium dichloride

1,2-ethanediylbis(2-butyl-4-phenylindenyl)hafnium dichloride

1,2-ethanediylbis(2-butyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-butyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-butyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-butyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-butyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-butyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-butyl-4-(1′-naphthyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-butyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-butyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-butyl-4-(4′-trifluoromethylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-tert-butylindenyl)hafnium dichloride

1,2-ethanediylbis(2-tert-butyl-4,5-benzindenyl)hafnium dichloride

1,2-ethanediylbis(2-tert-butyl-4-phenylindenyl)hafnium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(1′-naphthyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-tert-butyl-4-(4′-trifluoromethylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-cyclopentylindenyl)hafnium dichloride

1,2-ethanediylbis(2-cyclopentyl-4,5-benzindenyl)hafnium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-phenylindenyl)hafnium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(1′-naphthyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-cyclopentyl-4-(4′-trifluoromethylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-cyclohexylindenyl)hafnium dichloride

1,2-ethanediylbis(2-cyclohexyl-4,5-benzindenyl)hafnium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-phenylindenyl)hafnium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(1′-naphthyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,2-ethanediylbis(2-cyclohexyl-4-(4′-trifluoromethylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-methylindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-methyl-4,5-benzindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-methyl-4-phenylindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(4′-isopropylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(4′-trifluoromethylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-ethylindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-ethyl-4,5-benzindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-phenylindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(4′-isopropylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(4′-trifluoromethylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-propylindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-propyl-4,5-benzindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-propyl-4-phenylindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(4′-isopropylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(4′-trifluoromethylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-isopropylindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4,5-benzindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-phenylindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(4′-isopropylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(4′-trifluoromethylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-isobutylindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4,5-benzindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-phenylindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(4′-isopropylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(4′-trifluoromethylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-butylindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-butyl-4,5-benzindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-butyl-4-phenylindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(4′-isopropylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(4′-trifluoromethylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-tert-butylindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4,5-benzindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-phenylindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(4′-isopropylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(4′-trifluoromethylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-cyclopentylindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4,5-benzindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-phenylindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(4′-isopropylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(4′-trifluoromethylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-cyclohexylindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4,5-benzindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-phenylindenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(4′-isopropylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(4′-trifluoromethylphenyl)indenyl)zirconium dichloride

1,2-cyclohexanediylbis(2-methylindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-methyl-4,5-benzindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-methyl-4-phenylindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-ethylindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-ethyl-4,5-benzindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-phenylindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-propylindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-propyl-4,5-benzindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-propyl-4-phenylindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-isopropylindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4,5-benzindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-phenylindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-isobutylindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4,5-benzindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-phenylindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-butylindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-butyl-4,5-benzindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-butyl-4-phenylindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-tert-butylindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4,5-benzindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-phenylindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-cyclopentylindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4,5-benzindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-phenylindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-cyclohexylindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4,5-benzindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-phenylindenyl)titanium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,2-cyclohexanediylbis(2-methylindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-methyl-4,5-benzindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-methyl-4-phenylindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(1′-naphthyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-methyl-4-(4′-trifluoromethylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-ethylindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-ethyl-4,5-benzindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-phenylindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(1′-naphthyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-ethyl-4-(4′-trifluoromethylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-propylindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-propyl-4,5-benzindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-propyl-4-phenylindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(1′-naphthyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-propyl-4-(4′-trifluoromethylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-isopropylindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4,5-benzindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-phenylindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(1′-naphthyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-isopropyl-4-(4′-trifluoromethylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-isobutylindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4,5-benzindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-phenylindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(1′-naphthyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-isobutyl-4-(4′-trifluoromethylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-butylindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-butyl-4,5-benzindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-butyl-4-phenylindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(1′-naphthyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-butyl-4-(4′-trifluoromethylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-tert-butylindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4,5-benzindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-phenylindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(1′-naphthyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-tert-butyl-4-(4′-trifluoromethylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-cyclopentylindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4,5-benzindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-phenylindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(1′-naphthyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-cyclopentyl-4-(4′-trifluoromethylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-cyclohexylindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4,5-benzindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-phenylindenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(1′-naphthyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,2-cyclohexanediylbis(2-cyclohexyl-4-(4′-trifluoromethylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-methylindenyl)zirconium dichloride

1,3-propanediylbis(2-methyl-4,5-benzindenyl)zirconium dichloride

1,3-propanediylbis(2-methyl-4-phenylindenyl)zirconium dichloride

1,3-propanediylbis(2-methyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-methyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-methyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-methyl-4-(4′-isopropylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-methyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-methyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-methyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-methyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-methyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-methyl-4-(4′-trifluoromethylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-ethylindenyl)zirconium dichloride

1,3-propanediylbis(2-ethyl-4,5-benzindenyl)zirconium dichloride

1,3-propanediylbis(2-ethyl-4-phenylindenyl)zirconium dichloride

1,3-propanediylbis(2-ethyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-ethyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-ethyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-ethyl-4-(4′-isopropylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-ethyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-ethyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-ethyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-ethyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-ethyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-ethyl-4-(4′-trifluoromethylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-propylindenyl)zirconium dichloride

1,3-propanediylbis(2-propyl-4,5-benzindenyl)zirconium dichloride

1,3-propanediylbis(2-propyl-4-phenylindenyl)zirconium dichloride

1,3-propanediylbis(2-propyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-propyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-propyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-propyl-4-(4′-isopropylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-propyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-propyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-propyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-propyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-propyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-propyl-4-(4′-trifluoromethylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-isopropylindenyl)zirconium dichloride

1,3-propanediylbis(2-isopropyl-4,5-benzindenyl)zirconium dichloride

1,3-propanediylbis(2-isopropyl-4-phenylindenyl)zirconium dichloride

1,3-propanediylbis(2-isopropyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-isopropyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-isopropyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-isopropyl-4-(4′-isopropylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-isopropyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-isopropyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-isopropyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-isopropyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-isopropyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-isopropyl-4-(4′-trifluoromethylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-isobutylindenyl)zirconium dichloride

1,3-propanediylbis(2-isobutyl-4,5-benzindenyl)zirconium dichloride

1,3-propanediylbis(2-isobutyl-4-phenylindenyl)zirconium dichloride

1,3-propanediylbis(2-isobutyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-isobutyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-isobutyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-isobutyl-4-(4′-isopropylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-isobutyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-isobutyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-isobutyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-isobutyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-isobutyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-isobutyl-4-(4′-trifluoromethylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-butylindenyl)zirconium dichloride

1,3-propanediylbis(2-butyl-4,5-benzindenyl)zirconium dichloride

1,3-propanediylbis(2-butyl-4-phenylindenyl)zirconium dichloride

1,3-propanediylbis(2-butyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-butyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-butyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-butyl-4-(4′-isopropylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-butyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-butyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-butyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-butyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-butyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-butyl-4-(4′-trifluoromethylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-tert-butylindenyl)zirconium dichloride

1,3-propanediylbis(2-tert-butyl-4,5-benzindenyl)zirconium dichloride

1,3-propanediylbis(2-tert-butyl-4-phenylindenyl)zirconium dichloride

1,3-propanediylbis(2-tert-butyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-tert-butyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-tert-butyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-tert-butyl-4-(4′-isopropylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-tert-butyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-tert-butyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-tert-butyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-tert-butyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-tert-butyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-tert-butyl-4-(4′-trifluoromethylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-cyclopentylindenyl)zirconium dichloride

1,3-propanediylbis(2-cyclopentyl-4,5-benzindenyl)zirconium dichloride

1,3-propanediylbis(2-cyclopentyl-4-phenylindenyl)zirconium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(4′-isopropylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(4′-trifluoromethylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-cyclohexylindenyl)zirconium dichloride

1,3-propanediylbis(2-cyclohexyl-4,5-benzindenyl)zirconium dichloride

1,3-propanediylbis(2-cyclohexyl-4-phenylindenyl)zirconium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(4′-methylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(4′-ethylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(4′-propylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(4′-isopropylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(4′-methoxyphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(1′-naphthyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(9′-anthracenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(3′,5′-di-tert-butylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(4′-trifluoromethylphenyl)indenyl)zirconium dichloride

1,3-propanediylbis(2-methylindenyl)titanium dichloride

1,3-propanediylbis(2-methyl-4,5-benzindenyl)titanium dichloride

1,3-propanediylbis(2-methyl-4-phenylindenyl)titanium dichloride

1,3-propanediylbis(2-methyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-methyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-methyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-methyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-methyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-methyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-methyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,3-propanediylbis(2-methyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-methyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-methyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-ethylindenyl)titanium dichloride

1,3-propanediylbis(2-ethyl-4,5-benzindenyl)titanium dichloride

1,3-propanediylbis(2-ethyl-4-phenylindenyl)titanium dichloride

1,3-propanediylbis(2-ethyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-ethyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-ethyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-ethyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-ethyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-ethyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-ethyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,3-propanediylbis(2-ethyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-ethyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-ethyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-propylindenyl)titanium dichloride

1,3-propanediylbis(2-propyl-4,5-benzindenyl)titanium dichloride

1,3-propanediylbis(2-propyl-4-phenylindenyl)titanium dichloride

1,3-propanediylbis(2-propyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-propyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-propyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-propyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-propyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-propyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-propyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,3-propanediylbis(2-propyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-propyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-propyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-isopropylindenyl)titanium dichloride

1,3-propanediylbis(2-isopropyl-4,5-benzindenyl)titanium dichloride

1,3-propanediylbis(2-isopropyl-4-phenylindenyl)titanium dichloride

1,3-propanediylbis(2-isopropyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-isopropyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-isopropyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-isopropyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-isopropyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-isopropyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-isopropyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,3-propanediylbis(2-isopropyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-isopropyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-isopropyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-isobutylindenyl)titanium dichloride

1,3-propanediylbis(2-isobutyl-4,5-benzindenyl)titanium dichloride

1,3-propanediylbis(2-isobutyl-4-phenylindenyl)titanium dichloride

1,3-propanediylbis(2-isobutyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-isobutyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-isobutyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-isobutyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-isobutyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-isobutyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-isobutyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,3-propanediylbis(2-isobutyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-isobutyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-isobutyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-butylindenyl)titanium dichloride

1,3-propanediylbis(2-butyl-4,5-benzindenyl)titanium dichloride

1,3-propanediylbis(2-butyl-4-phenylindenyl)titanium dichloride

1,3-propanediylbis(2-butyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-butyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-butyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-butyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-butyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-butyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-butyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,3-propanediylbis(2-butyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-butyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-butyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-tert-butylindenyl)titanium dichloride

1,3-propanediylbis(2-tert-butyl-4,5-benzindenyl)titanium dichloride

1,3-propanediylbis(2-tert-butyl-4-phenylindenyl)titanium dichloride

1,3-propanediylbis(2-tert-butyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-tert-butyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-tert-butyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-tert-butyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-tert-butyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-tert-butyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-tert-butyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,3-propanediylbis(2-tert-butyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-tert-butyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-tert-butyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-cyclopentylindenyl)titanium dichloride

1,3-propanediylbis(2-cyclopentyl-4,5-benzindenyl)titanium dichloride

1,3-propanediylbis(2-cyclopentyl-4-phenylindenyl)titanium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-cyclohexylindenyl)titanium dichloride

1,3-propanediylbis(2-cyclohexyl-4,5-benzindenyl)titanium dichloride

1,3-propanediylbis(2-cyclohexyl-4-phenylindenyl)titanium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(4′-methylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(4′-ethylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(4′-propylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(4′-isopropylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(4′-tert-butylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(4′-methoxyphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(1′-naphthyl)indenyl)titanium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(9′-anthracenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(3′,5′-di-tert-butylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(4′-trifluoromethylphenyl)indenyl)titanium dichloride

1,3-propanediylbis(2-methylindenyl)hafnium dichloride

1,3-propanediylbis(2-methyl-4,5-benzindenyl)hafnium dichloride

1,3-propanediylbis(2-methyl-4-phenylindenyl)hafnium dichloride

1,3-propanediylbis(2-methyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-methyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-methyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-methyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-methyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-methyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-methyl-4-(1′-naphthyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-methyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-methyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-methyl-4-(4′-trifluoromethylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-ethylindenyl)hafnium dichloride

1,3-propanediylbis(2-ethyl-4,5-benzindenyl)hafnium dichloride

1,3-propanediylbis(2-ethyl-4-phenylindenyl)hafnium dichloride

1,3-propanediylbis(2-ethyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-ethyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-ethyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-ethyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-ethyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-ethyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-ethyl-4-(1′-naphthyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-ethyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-ethyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-ethyl-4-(4′-trifluoromethylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-propylindenyl)hafnium dichloride

1,3-propanediylbis(2-propyl-4,5-benzindenyl)hafnium dichloride

1,3-propanediylbis(2-propyl-4-phenylindenyl)hafnium dichloride

1,3-propanediylbis(2-propyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-propyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-propyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-propyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-propyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-propyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-propyl-4-(1′-naphthyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-propyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-propyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-propyl-4-(4′-trifluoromethylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-isopropylindenyl)hafnium dichloride

1,3-propanediylbis(2-isopropyl-4,5-benzindenyl)hafnium dichloride

1,3-propanediylbis(2-isopropyl-4-phenylindenyl)hafnium dichloride

1,3-propanediylbis(2-isopropyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-isopropyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-isopropyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-isopropyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-isopropyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-isopropyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-isopropyl-4-(1′-naphthyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-isopropyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-isopropyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-isopropyl-4-(4′-trifluoromethylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-isobutylindenyl)hafnium dichloride

1,3-propanediylbis(2-isobutyl-4,5-benzindenyl)hafnium dichloride

1,3-propanediylbis(2-isobutyl-4-phenylindenyl)hafnium dichloride

1,3-propanediylbis(2-isobutyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-isobutyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-isobutyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-isobutyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-isobutyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-isobutyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-isobutyl-4-(1′-naphthyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-isobutyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-isobutyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-isobutyl-4-(4′-trifluoromethylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-butylindenyl)hafnium dichloride

1,3-propanediylbis(2-butyl-4,5-benzindenyl)hafnium dichloride

1,3-propanediylbis(2-butyl-4-phenylindenyl)hafnium dichloride

1,3-propanediylbis(2-butyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-butyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-butyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-butyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-butyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-butyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-butyl-4-(1′-naphthyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-butyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-butyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-butyl-4-(4′-trifluoromethylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-tert-butylindenyl)hafnium dichloride

1,3-propanediylbis(2-tert-butyl-4,5-benzindenyl)hafnium dichloride

1,3-propanediylbis(2-tert-butyl-4-phenylindenyl)hafnium dichloride

1,3-propanediylbis(2-tert-butyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-tert-butyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-tert-butyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-tert-butyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-tert-butyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-tert-butyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-tert-butyl-4-(1′-naphthyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-tert-butyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-tert-butyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-tert-butyl-4-(4′-trifluoromethylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-cyclopentylindenyl)hafnium dichloride

1,3-propanediylbis(2-cyclopentyl-4,5-benzindenyl)hafnium dichloride

1,3-propanediylbis(2-cyclopentyl-4-phenylindenyl)hafnium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(1′-naphthyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-cyclopentyl-4-(4′-trifluoromethylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-cyclohexylindenyl)hafnium dichloride

1,3-propanediylbis(2-cyclohexyl-4,5-benzindenyl)hafnium dichloride

1,3-propanediylbis(2-cyclohexyl-4-phenylindenyl)hafnium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(4′-methylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(4′-ethylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(4′-propylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(4′-isopropylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(4′-tert-butylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(4′-methoxyphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(1′-naphthyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(9′-anthracenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(3′,5′-di-tert-butylphenyl)indenyl)hafnium dichloride

1,3-propanediylbis(2-cyclohexyl-4-(4′-trifluoromethylphenyl)indenyl)hafnium dichloride

The metallocenes prepared according to the present invention are highly active catalyst components for olefin polymerization. Depending on the substitution pattern of the ligands, the metallocenes can be obtained as mixtures of isomers. For the polymerization, the metallocenes are preferably used as pure isomers, but the use of the racemate is sufficient in most cases. The metallocenes prepared by the process of the present invention can also be used as catalysts in organic synthesis, in which case the pure enantiomers are preferably used.

The metal complexes of the formula I prepared by the process of the present invention are particularly suitable as constituents of catalyst systems for preparing polyolefins by polymerization of at least one olefin in the presence of a catalyst comprising at least one cocatalyst and at least one metal complex.

The cocatalyst which together with a metal complex of the formula I forms the catalyst system comprises at least one compound such as an aluminoxane or Lewis acid or ionic compound which reacts with a metal complex to convert it into a cationic compound.

Examples of such cocatalysts are described in DE 19962905.

The cocatalyst and/or the metal complex can be in unsupported or supported form. Examples of supported cocatalysts and/or supported metal complexes are described in DE 19962905.

The support component of the catalyst system can be any organic or inorganic, inert solid, in particular a porous support such as talc, inorganic oxides and finely divided polymer powders (e.g. polyolefins). Examples of suitable support materials and methods of application to the support are described in DE 19962905.

For the purposes of the present invention, the term polymerization encompasses both homopolymerization and copolymerization.

Preference is given to polymerizing olefins of the formula R_(m)—CH═CH—R_(n), where R_(m) and R_(n) are identical or different and are each a hydrogen atom or a carbon-containing radical having from 1 to 20 carbon atoms, in particular from 1 to 10 carbon atoms, and R_(m) and R_(n) together with the atoms connecting them may form one or more rings. Examples of such olefins are described in DE 19962905.

The polymerization is carried out at from 0 to 300° C., preferably from 50 to 200° C., very particularly preferably 50-80° C. The pressure is from 0.5 to 2000 bar, preferably from 5 to 64 bar.

The polymerization can be carried out in solution, in bulk, in suspension or in the gas phase, continuously or batchwise, in one or more stages. Examples of suitable polymerization processes are described in DE 19962905.

If required, hydrogen is added as molar mass regulator and/or to increase the activity.

The catalyst system can be introduced into the polymerization system in pure form or can, to enable it to be metered more readily, be admixed with inert components such as paraffins, oils or waxes. In addition, an antistatic can be introduced into the polymerization system either together with or separately from the catalyst system used.

In the process of the present invention, the use of a specific bridging reagent of the formula V gives multiply substituted ligand systems of the formula VI in high yields and purities, thus opening up an efficient route to transition metal complexes of the formula I.

The invention is illustrated by the following, nonlimiting examples.

General procedures: Preparation and handling of organometallic compounds were carried out in the absence of air and moisture under argon (Schlenk technique or glove box). All solvents required were purged with argon and dried over molecular sieves before use. 1,2-Bistrifluoromethylsulfonyloxyethane was synthesized as described by Lindner, Ekkehard; Au, Guenter von; Eberle, Hans-Juergen; Chem.Ber.; 114; 2; 1981; 810-813. The preparations of 1,3-bistrifluoromethylsulfonyloxypropane and 1,2-bistrifluoromethylsulfonyloxycyclohexane were carried out analogously. The indenes used were prepared as described in WO 9840331.

EXAMPLE 1 1,2-Bis(2-methyl-4-(4′-tert-butylphenyl)indenyl)ethane

In a 1 l three-neck flask, 39.3 g (150 mmol) of 2-methyl-7-(4′-tert-butylphenyl)indene in 110 ml of tetrahydrofuran were admixed at 0° C. with 60 ml of n-butyllithium (150 mmol, 2.5 M in toluene). The mixture was stirred for another 1 hour at room temperature and the resulting red solution was added dropwise over a period of 30 minutes to a solution of 24.5 g (75 mmol) of 1,2-bistrifluoromethylsulfonyloxyethane in 26 ml of tetrahydrofuran which had been cooled to −40° C. The mixture was stirred for another 1 hour at −20° C. and for 13 hours at room temperature. The solvent was then removed under reduced pressure and the residue was admixed with 150 ml of toluene. The organic phase was washed in succession with 1×100 ml of a saturated NaHCO₃ solution, 2×50 ml of a saturated NaHCO₃ solution and 2×100 ml of water. The organic phase was dried over magnesium sulfate and the solvent was removed under reduced pressure. The crude product obtained in this way was purified by column chromatography on silica gel, giving the product in a yield of 32 g (58 mmol, 77%) and a purity of >95% (according to GC) in the form of a yellow oil. ¹H-NMR: δ=7.50-7.16 (m, 14 H, aromat. H), 3.34 (s, 4H, benzyl. H), 2.77 (s, 4H, C2 bridge), 1.94 (s, 6H, CH₃), 1.37 (s, 18H, C(CH₃)₃) ppm.

EXAMPLE 2 1,2-Bis(2-ethyl-4-(4′-tert-butylphenyl)indenyl)ethane

In a 250 ml three-neck flask, 11.1 g (40 mmol) of 2-ethyl-7-(4′-tert-butylphenyl)indene in 30 ml of tetrahydrofuran ere admixed at 0° C. with 16 ml of n-butyllithium (40 mmol, 2.5 M in toluene). The mixture was stirred for another 1 hour at room temperature and the resulting red solution was added dropwise over a period of 30 minutes to a solution of 6.5 g (20 mmol) of 1,2-bistrifluoromethylsulfonyloxyethane in 26 ml of tetrahydrofuran which had been cooled to −40° C. The mixture was stirred for another 1 hour at −20° C. and for 13 hours at room temperature. The solvent was then removed under reduced pressure and the residue was admixed with 150 ml of toluene. The organic phase was washed in succession with 1×100 ml of a saturated NaHCO₃ solution, 2×50 ml of a saturated NaHCO₃ solution and 2×100 ml of water. The organic phase was dried over magnesium sulfate and the solvent was removed under reduced pressure. The crude product obtained in this way was purified by column chromatography on silica gel, giving the product in a yield of 7.4 g (13 mmol, 64%) and a purity of >95% (according to GC) in the form of a yellow oil. ¹H-NMR: δ=7.51-7.15 (m, 14 H, aromat. H), 3.32 (s, 4H, benzyl. H), 2.67 (s, 4H, C2 bridge), 1.94 (q, 4H, CH₂), 1.37 (s, 18H, C(CH₃)₃), 1.07 (t, 6H, CH₃) ppm.

EXAMPLE 3 1,2-Bis(2-isopropyl-4-(4′-tert-butylphenyl)indenyl)ethane

In a 250 ml three-neck flask, 17.4 g (60 mmol) of 2-isopropyl-7-(4′-tert-butylphenyl)indene in 50 ml of tetrahydrofuran were admixed at 0° C. with 24 ml of n-butyllithium (60 mmol, 2.5 M in toluene). The mixture was stirred for another 1 hour at room temperature and the resulting red solution was added dropwise over a period of 30 minutes to a solution of 9.8 g (30 mmol) of 1,2-bistrifluoromethylsulfonyloxyethane in 10 ml of tetrahydrofuran which had been cooled to −40° C. The mixture was stirred for another 1 hour at −20° C. and for 13 hours at room temperature. The solvent was then removed under reduced pressure and the residue was admixed with 150 ml of toluene. The organic phase was washed in succession with 1×100 ml of a saturated NaHCO₃ solution, 2×50 ml of a saturated NaHCO₃ solution and 2×100 ml of water. The organic phase was dried over magnesium sulfate and the solvent was removed under reduced pressure. The crude product obtained in this way was purified by column chromatography on silica gel, giving the product in a yield of 9 g (15 mmol, 53%) and a purity of >95% (according to GC) in the form of a yellow oil. ¹H-NMR: δ=7.49-7.13 (m, 14 H, aromat. H), 3.33 (s, 4H, benzyl. H), 2.71 (s, 4H, C2 bridge), 2.52 (m, 2H, isopropyl-H), 1.37 (s, 18H, C(CH₃)₃), 1.11 (m, 12H, CH₃) ppm.

EXAMPLE 4 1,3-Bis(2-methyl-4-phenylindenyl)propane

In a 250 ml three-neck flask, 20.6 g (100 mmol) of 2-methyl-7-phenylindene in 100 ml of tetrahydrofuran were admixed at 0° C. with 40 ml of n-butyllithium (100 mmol, 2.5 M in toluene). The mixture was stirred for another 1 hour at room temperature and the resulting red solution was added dropwise over a period of 30 minutes to a solution of 17.1 g (50 mmol) of 1,3-bistrifluoromethylsulfonyloxypropane in 40 ml of tetrahydrofuran which had been cooled to −40° C. The mixture was stirred for another 1 hour at −20° C. and for 13 hours at room temperature. The solvent was then removed under reduced pressure and the residue was admixed with 150 ml of toluene. The organic phase was washed in succession with 1×100 ml of a saturated NaHCO₃ solution, 2×50 ml of a saturated NaHCO₃ solution and 2×100 ml of water. The organic phase was dried over magnesium sulfate and the solvent was removed under reduced pressure. The crude product obtained in this way was purified by column chromatography on silica gel, giving the product in a yield of 37g (81 mmol, 81% and a purity of >95% (according to GC) in the form of a yellow oil. ¹H-NMR: δ=7.48-7.08 (m, 16 H, aromat. H), 3.22 (s, 4H, benzyl. H), 1.96 (s, 4H, CH₂), 1.71 (s, 6H, CH₃), 1.37 (s, 2H, CH₂) ppm.

EXAMPLE 5 E-1,2-Bis(2-propyl-4-phenylindenyl)cyclohexane

In a 250 ml three-neck flask, 23.4 g (100 mmol) of 2-n-propyl-7-phenylindene in 100 ml of tetrahydrofuran were admixed at 0° C. with 40 ml of n-butyllithium (100 mmol, 2.5 M in toluene). The mixture was stirred for another 1 hour at room temperature and the resulting red solution was added dropwise over a period of 30 minutes to a solution of 19.0 g (50 mmol) of 1,2-bistrifluoromethylsulfonyloxycyclohexane in 40 ml of tetrahydrofuran which had been cooled to −40° C. The mixture was stirred for another 1 hour at −20° C. and for 13 hours at room temperature. The solvent was then removed under reduced pressure and the residue was admixed with 150 ml of toluene. The organic phase was washed in succession with 1×100 ml of a saturated NaHCO₃ solution, 2×50 ml of a saturated NaHCO₃ solution and 2×100 ml of water. The organic phase was dried over magnesium sulfate and the solvent was removed under reduced pressure. The crude product obtained in this way was purified by column chromatography on silica gel, giving the product in a yield of 43 g (79 mmol, 79%) and a purity of >95% (according to GC) in the form of a yellow oil. ¹H-NMR: δ=7.50-7.06 (m, 16 H, aromat. H), 3.33 (s, 4H, benzyl. H), 1.94-0.96 (m, 24H, CH, CH₂, CH₃) ppm.

EXAMPLE 6 1,2-Ethanediylbis(2-methyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

9.1 g (16.5 mmol) of 1,2-bis(2-methyl-4-(4′-tert-butylphenyl)indenyl)ethane and 230 ml of diethyl ether were placed in a 500 ml three-neck flask. The suspension was admixed at room temperature with 20.7 ml (33.1 mmol, 1.6 M in hexane) of n-BuLi.

The now yellow suspension was stirred at room temperature for 12 hours. 5.3 g (16.5 mmol) of zirconium tetrachloride•dimethoxyethane adduct were then added at 0° C. The suspension was stirred at RT for another 12 hours. The yellow solid was isolated by filtration on a G3 frit and washed with 20 ml of diethyl ether. The LiCl-containing crude complex (quant.) was stirred with 310 ml of toluene at 80° C. in a 1 l flask and was then filtered through toluene-moist Celite. The Celite was washed with another 150 ml of toluene which had been heated to 80° C. The filtrate was evaporated to 20 ml and stored at 4° C., resulting in the complex crystallizing as yellow needles. Filtration gave 3.4 g (4.8 mmol, 29%, r/m>4:1) of the yellow complex. ¹H-NMR: δ=7.75-6.97 (m, 14 H, aromat. H), 6.54 (s, 2H, Cp-Ind-H), 4.10, 3.60 (2×m, 4H, CH₂CH₂), 2.12 (s, 6H, CH₃), 1.31 (s, 18H, tert-butyl) ppm.

EXAMPLE 7 1,2-Ethanediylbis(2-ethyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

7.4 g (13.0 mmol) of 1,2-bis(2-ethyl-4-(4′-tert-butylphenyl)indenyl)ethane and 200 ml of diethyl ether were placed in a 500 ml three-neck flask. The suspension was admixed at room temperature with 16.3 ml (26 mmol, 1.6 M in hexane) of n-BuLi.

The now yellow suspension was stirred at room temperature for 12 hours. 4.2 g (13.0 mmol) of zirconium tetrachloride•dimethoxyethane adduct were then added at 0° C. The suspension was stirred at RT for another 12 hours. The yellow solid was isolated by filtration on a G3 frit and washed with 20 ml of diethyl ether. The LiCl-containing crude complex (quant.) was stirred with 240 ml of toluene at 80° C. in a 1 l flask and was then filtered through toluene-moist Celite. The Celite was washed with another 100 ml of toluene which had been heated to 80° C. The filtrate was evaporated to 20 ml and stored at 4° C., resulting in the complex crystallizing as yellow needles. Filtration gave 3.3 g (4.5 mmol, 34%, r/m>7:1) of the yellow complex. ¹H-NMR: δ=7.70-6.92 (m, 14 H, aromat. H), 6.52 (s, 2H, Cp-Ind-H), 4.11, 3.62 (2×m, 4H, CH₂CH₂), 2.86 (m, 4H, CH₂), 1.32 (s, 18H, tert-butyl), 0.88 (m, 6H, CH₃) ppm.

EXAMPLE 8 1,2-Ethanediylbis(2-isopropyl-4-(4′-tert-butylphenyl)indenyl)zirconium dichloride

9.0 g (15.0 mmol) of 1,2-bis(2-isopropyl-4-(4′-tert-butylphenyl)indenyl)ethane and 210 ml of diethyl ether were placed in a 500 ml three-neck flask. The suspension was admixed at room temperature with 18.8 ml (30 mmol, 1.6 M in hexane) of n-BuLi.

The now yellow suspension was stirred at room temperature for 12 hours. 4.8 g (15 mmol) of zirconium tetrachloride•dimethoxyethane adduct were then added at 0° C. The suspension was stirred at RT for another 12 hours. The yellow solid was isolated by filtration on a G3 frit and washed with 20 ml of diethyl ether. The LiCl-containing crude complex (quant.) was stirred with 220 ml of toluene at 80° C. in a 1 l flask and was then filtered through toluene-moist Celite. The Celite was washed with another 90 ml of toluene which had been heated to 80° C. The filtrate was evaporated to 20 ml and stored at 40° C., resulting in the complex crystallizing as yellow needles. Filtration gave 3.7 g (4.8 mmol, 32%, r/m>5:1) of the yellow complex. ¹H-NMR: δ=7.74-6.90 (m, 14 H, aromat. H), 6.55 (s, 2H, Cp-Ind-H), 4.12, 3.63 (2×m, 4H, CH₂CH₂), 2.97 (m, 2H, CH), 1.31 (s, 18H, tert-butyl), 0.80 (m, 12H, CH₃) ppm.

EXAMPLE 9 1,3-Propanediylbis(2-methyl-4-phenyl-indenyl)zirconium dichloride

7.6 g (15.0 mmol) of 1,3-bis(2-methyl-4-phenylindenyl)propane and 210 ml of diethyl ether were placed in a 500 ml three-neck flask. The suspension was admixed at room temperature with 18.8 ml (30 mmol, 1.6 M in hexane) of n-BuLi.

The now yellow suspension was stirred at room temperature for 12 hours. 4.8 g (15 mmol) of zirconium tetrachloride•dimethoxyethane adduct were then added at 0° C. The suspension was stirred at RT for another 12 hours. The yellow solid was isolated by filtration on a G3 frit and washed with 20 ml of diethyl ether. The LiCl-containing crude complex (quant.) was stirred with 210 ml of toluene at 80° C. in a 1 l flask and was then filtered through toluene-moist Celite. The Celite was washed with another 100 ml of toluene which had been heated to 80° C. The filtrate was evaporated to 20 ml and stored at 40° C., resulting in the complex crystallizing as yellow needles. Filtration gave 3.9 g (5.8 mmol, 38%, r/m>3:1) of the yellow complex. ¹H-NMR: δ=7.69-6.87 (m, 16 H, aromat. H), 6.43 (s, 2H, Cp-Ind-H), 4.15, 3.73 (2×m, 6H, CH₂CH₂), 2.11 (s, 6H, CH₃) ppm.

EXAMPLE 10 1,2-Cyclohexanediylbis(2-propyl-4-phenyl)indenyl)zirconium dichloride

8.2 g (15.0 mmol) of 1,2-bis(2-methyl-4-phenylindenyl)cyclohexane and 210 ml of diethyl ether were placed in a 500 ml three-neck flask. The suspension was admixed at room temperature with 18.8 ml (30 mmol, 1.6 M in hexane) of n-BuLi.

The now yellow suspension was stirred at room temperature for 12 hours. 4.8 g (15 mmol) of zirconium tetrachloride-dimethoxyethane adduct were then added at 0° C. The suspension was stirred at RT for another 12 hours. The yellow solid was isolated by filtration on a G3 frit and washed with 20 ml of diethyl ether. The LiCl-containing crude complex (quant.) was stirred with 180 ml of toluene at 80° C. in a 1 l flask and was then filtered through toluene-moist Celite. The Celite was washed with another 80 ml of toluene which had been heated to 80° C. The filtrate was evaporated to 20 ml and stored at 4° C., resulting in the complex crystallizing as yellow needles. Filtration gave 3.3 g (4.7 mmol, 31%, r/m>4:1) of the yellow complex. ¹H-NMR: δ=7.74-6.89 (m, 16 H, aromat. H), 6.47 (s, 2H, Cp-Ind-H), 4.01, 3.52 (2×m, 2H, CHCH), 2.96 (m, 4H, CH₂), 1.33-0.88 (m, 18H, CH₂, CH₃, Cy-CH₂) ppm. 

We claim:
 1. A process for preparing compounds of the formula I:

where M¹ is Ti, Zr or Hf, R¹ are identical or different and are each hydrogen or a C₁-C₂₀ group, and R² are identical or different and are each hydrogen or a C₁-C₂₀ group, where R¹ together with R² may also form a monocyclic or polycyclic ring system, and R³ are identical or different and are each a hydrogen atom or a C₆-C₁₈-aryl group which may be substituted, C₅-C₁₈-heteroaryl, C₇-C₂₀-arylalkyl, C₇-C₂₀-alkylaryl, fluorinated C₆-C₁₈-aryl, fluorinated C₇-C₂₀-arylalkyl or fluorinated C₇-C₂₀-alkylaryl, and two radicals R³ and R⁴ may form a monocyclic or polycyclic ring system, R⁴ are identical or different and are each a hydrogen atom or together with R³ form a monocyclic or polycyclic ring system, R⁵, R⁶ are identical or different and are each a hydrogen atom or a C₁-C₂₀ group, R⁷, R⁸, R⁹, R¹⁰ are identical or different and are each a hydrogen atom or a C₁-C₂₀ group, and may, among one another, form a monocyclic or bicyclic ring system, i is from 1 to 10 and j is from 1 to 10 and X¹, X² may be identical or different and are halogen atoms, alkyl groups or substituted or unsubstituted phenoxides or X¹ together with one or more radicals X¹ or X² forms a monocyclic or polycyclic ring system, comprising the following steps: A) reacting a compound of the formula II

where R¹, R², R³, R⁴, R⁵ and R⁶ are as defined above and R¹¹ is a hydrogen atom and R¹² is hydrogen or a group which can be replaced by a metal, with a compound of the formula III M²R¹³  (III) where M² is lithium and R¹³ is a hydrogen atom or a C₁-C₂₀ group to form a compound of the formula IV

where R¹, R², R³, R⁴, R⁵, R⁶, R¹¹ are as defined above and M² is as defined above B) reacting the compound of the formula IV obtained from step A) with a compound of the formula V

where R⁷, R⁸, R⁹ and R¹⁰ are as defined above and R¹⁴, R¹⁵ are identical and are trifluoromethyl and i is from 1 to 10 and j is from 1 to 10, to form a compound of the formula VI

where R¹, R², R³, R⁴, R⁵, R⁶, R⁷, R⁸, R⁹, R¹⁰ are as defined above and i and j are as defined above, C) reacting the compound of the formula VI obtained from step B) with a compound of the formula III as described in step A) to form a compound of the formula VII

where R¹, R², R³, R⁴, R⁵, R⁶, R⁷, R⁸, R⁹, R¹⁰ and R¹¹ are as defined above and M² is as defined above and n is 2 and i and j are as defined above, and A) reacting the compound of the formula VII obtained from step C) with a compound of the formula VIII M¹(X¹)f(X²)g(D)a where M¹ is an element of transition groups I to VIII of the Periodic Table of the Elements and D is a donor solvent containing at least one oxygen atom and/or sulfur atom, and X¹ and X² are identical or different and are as defined above, and f is from 0 to 4, and g is from 0 to 4 and the sum of f+g corresponds to the oxidation state of the metal ion, and a is from 1 to 100, to give the target compound of the formula I.
 2. A process as claimed in claim 1, wherein M¹ is zirconium, R¹ are identical or different and are each hydrogen, C₁-C₁₈-alkyl, C₂-C₁₀-alkenyl, C₃-C₁₅-alkylalkenyl, C₆-C₁₈-aryl, C₄-C₁₈-heteroaryl, C₇-C₂₀-arylalkyl, C₇-C₂₀-alkylaryl, fluorinated C₁-C₁₂-alkyl, fluorinated C₆-C₁₈-aryl, fluorinated C₇-C₂₀-arylalkyl or fluorinated C₇-C₂₀-alkylaryl, and R² are identical or different and are each hydrogen, C₁-C₁₈-alkyl, C₂-C₁₀-alkenyl, C₃-C₁₅-alkylalkenyl, C₆-C₁₈-aryl, C₄-C₁₈-heteroaryl, C₇-C₂₀-arylalkyl, C₇-C₂₀-alkylaryl, fluorinated C₁-C₁₂-alkyl, fluorinated C₆-C₁₈-aryl, fluorinated C₇-C₂₀-arylalkyl or fluorinated C₇-C₂₀-alkylaryl, where R¹ together with R² may also form a monocyclic or polycyclic ring system, and R³ are identical or different and are each a hydrogen atom or a C₆-C₁₈-aryl group which may be substituted, C₅-C₁₈-heteroaryl, C₇-C₂₀-arylalkyl, C₇-C₂₀-alkylaryl, fluorinated C₆-C₁₈-aryl, fluorinated C₇-C₂₀-arylalkyl or fluorinated C₇-C₂₀-alkylaryl, and two radicals R³ and R⁴ may form a monocyclic or polycyclic ring system, R⁵, R⁶ are identical or different and are each a hydrogen atom, C₂-C₁₀-alkenyl, C₃-C₁₅-alkylalkenyl, C₆-C₁₈-aryl, C₄-C₁₈-heteroaryl, C₇-C₂₀-arylalkyl, C₇-C₂₀-alkylaryl, fluorinated C₁-C₁₂-alkyl, fluorinated C₆-C₁₈-aryl, fluorinated C₇-C₂₀-arylalkyl or fluorinated C₇-C₂₀-alkylaryl, R⁷, R⁸, R⁹, R¹⁰ are identical or different and are each a hydrogen atom, C₁-C₁₀-alkyl, C₂-C₁₀-alkenyl, C₃-C₁₅-alkylalkenyl, C₆-C₁₈-aryl, C₄-C₁₈-heteroaryl, C₇-C₂₀-arylalkyl, C₇-C₂₀-alkylaryl, fluorinated C₁-C₁₂-alkyl, fluorinated C₆-C₁₈-aryl, fluorinated C₇-C₂₀-arylalkyl or fluorinated C₇-C₂₀-alkylaryl, and may, among one another, form a monocyclic or bicyclic ring system, i is from 1 to 3 and j is from 1 to 3 and R¹² is hydrogen, chlorine, bromine or iodine, M² is lithium, and R¹³ is a hydrogen atom, C₁-C₁₈-alkyl, C₂-C₁₀-alkenyl, C₃-C₁₅-alkylalkenyl, C₆-C₁₈-aryl, C₅-C₁₈-heteroaryl, C₇-C₂₀-arylalkyl, C₇-C₂₀-alkylaryl, fluorinated C₁-C₁₂-alkyl, fluorinated C₆-C₁₈-aryl, fluorinated C₇-C₂₀-arylalkyl or fluorinated C₇-C₂₀-alkylaryl, R¹⁴, R¹⁵ are identical and are trifluoromethyl and n is 2 and D is a donor solvent containing at least one oxygen atom and X¹ and X² are identical or different and are each halogen or a phenoxide, and f is from 1 to 4, and g is from 1 to 4 and the sum f+g corresponds to the oxidation state of the metal ion, and a is from 1 to
 10. 3. A process as claimed in claim 1, wherein D is an ether, a cyclic ether or an acetal.
 4. A process as claimed in claim 3, wherein D is tetrahydrofuran, tetrahydropyran, diethyl ether, dimethoxymethane, diethoxymethane, dipropoxymethane, 1,2-dimethoxyethane, 1,2-diethoxyethane, 1,2-dipropoxyethane, 1,3-dimethoxypropane; 1,3-diethoxypropane, 1,3-dipropoxypropane, 1,2-dimethoxybenzene, 1,2-diethoxybenzene and/or 1,2-dipropoxybenzene.
 5. A process as claimed in claim 1, wherein R¹ are all identical and R² are all identical and are each a C₁-C₂₀ group, where R¹ together with R² may also form a monocyclic or polycyclic ring system.
 6. A process as claimed in claim 5, wherein the radicals R¹ are identical and are each C₁-C₁₈-alkyl, C₂-C₁₀-alkenyl, C₃-C₁₅-alkylalkenyl, C₆-C₁₈-aryl, C₄-C₁₈-heteroaryl, C₇-C₂₀-arylalkyl, C₇-C₂₀-alkylaryl, fluorinated C₁-C₁₂-alkyl, fluorinated C₆-C₁₈-aryl, fluorinated C₇-C₂₀-arylalkyl or fluorinated C₇-C₂₀-alkylaryl and the radicals R² are identical and are each C₁-C₁₈-alkyl, C₂-C₁₀-alkenyl, C₃-C₁₅-alkylalkenyl, C₆-C₁₈-aryl, C₄-C₁₈-heteroaryl, C₇-C₂₀-arylalkyl, C₇-C₂₀-alkylaryl, fluorinated C₁-C₁₂-alkyl, fluorinated C₆-C₁₈-aryl, fluorinated C₇-C₂₀-arylalkyl or fluorinated C₇-C₂₀-alkylaryl, where R¹ together with R² may also form a monocyclic or polycyclic ring system. 